# What size drill bit to use for 3 8 tap

To Tap This Size Screw Or Bolt: Use This Drill Bit: (Closest Fractional:) Decimal Inches. NF. 3/ 3/64 NC. # NF. # 1/ Tap Size Cutting Taps. Forming Taps and. Drill. Decimal. Drill. Decimal. Pitch. Size 3/ 5/ S 3/ Q T 7/ U Y. US Tap and Drill Bit Size Table. Print this page. Tap, Fractional Drill Bit, Number Drill Bit, Letter Drill Bit. #, 3/64, -, - 3/8, 21/64, -, Q. 7/16, 23/

## tap drill size chart for standard threads

Taps drill sizes, inch and metric, and tap drill calculator. #36 # #29 # 24 #25 # #17 1/ #7 5/ F 3/ 5/16 7/ U 1/ 27/64 9/ 12 31/64 . enter diameter in decimals eg for 1/2, do not to use fractions. Quickly determine the drill bit size you need using our drill chart. Plus find details about drill bits types you can use for your DIY projects. 11/32″; 23/64″; 3/8″; 25/64″; 13/32″; 27/64″ . If you're tapping holes you're pre-drilling you can check out our tap drill chart for specific size conversions. This web page says I need a (size Q) drill. However, my Default. Going from memory, I use a letter O,, for 3/ threads. Harry.

Having the correct size hole prior to threading for a bolt is critical; the incorrect If you must use a handheld power drill, start with a smaller drill bit and support. TAP DRILLSIZE. , No. , No. , No. , No. , No. , No. , No. Use this calculator for finding the drill bit size needed for any tap - even special sizes 3/8. V. .

Below is a comprehensive drill and tap size chart for all drills and taps, imperial and metric, up People frequently use a chart such as this to determine the proper tap drill for a certain thread size or the proper tap for an existing hole. . In addition, mm ( in), and ​3⁄8 in ( in) will work well, although major. NPT Size. Tap Drill Size (in.) (Decimal) (in.) 1/16 - 27, C, (). 1/8 - 27, Q, ( ). 1/4 - 18, 7/16, (). 3/8 - 18, 9/16, (). 1/2 - 14, 45/64, (). Drill sizes for inch and metric taps, from Victor Machinery. /, /4 To determine the proper drill size for 75% thread on a special pitch tap use the following Follow this link to order metric drill bits or inch size jobber length drill bits.